Creating A Simple Game For Android Devices Download
Welcome to Android game development with the Google Play games services!
The Play Games SDK provides cross-platform Google Play games services that lets you easilyintegrate popular gaming features such as achievements, leaderboards, andSaved Games in your tablet and mobile games.
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- UPDATE: This technique is obsolete, there are now various other ways to make an app. This may not work anymore. My first published app is available for download on the Android App Market here. The following is a quick tutorial on how practically anyone can create one.
This training will guide you to install a sample game application for Androidand quickly get started to create your own Android game. The Type-a-NumberChallenge sample app demonstrates how you can integrate achievements andleaderboards into your game.
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Before you begin
- Set up your Android development environment. If you are new to developingAndroid applications, seeBuilding Your First App.
- Have an Android device running Android 4.0 (Ice Cream Sandwich) or higheron-hand for testing.
Step 1: Download the sample app
For this developer guide, you will need to download the Type-a-Number Challenge sampleAndroid application.
To download and set up the sample application in Android Studio:
- Download the Android samples from thesamples download page.
- Import the
android-basic-samples
project. This project includesTypeANumber
and other Android gamesamples. To do this in Android Studio:- Click File > Import Project.
- Browse to the directory where you downloaded
android-basic-samples
on your developmentmachine. Select the fileandroid-basic-samples/build.gradle
and click OK.
- In the
TypeANumber
module, openAndroidManifest.xml
and change the package name fromcom.google.example.games.tanc
to a different package name of your own. The new package name mustnot start withcom.google
,com.example
, orcom.android
.
Step 2: Set up the game in the Google Play Console
The Google Play Console is where you manage Google Play games services for your game, andconfigure metadata for authorizing and authenticating your game.
To set up the sample game in the Google Play Console:
- Point your web browser to theGoogle Play Console, andsign in. If you haven't registered for the Google Play Console before, you will be prompted to do so.
- Follow these instruction toadd your game to the Google Play Console.
- When asked if you use Google APIs in your app, select I don’t use any Google APIs in my game yet.
- For the purpose of this developer guide, you can fill up the form with your owngame details. For convenience, you can use the placeholder icons and screenshotsprovided in the Downloads page.
- Follow these instructions togenerate an OAuth 2.0 client IDfor your Android app.
- When linking your Android app, make sure to specify the exact packagename you used previously when renaming sample package.
- You can use the Generate Signed APK Wizard in Android Studio togenerate a new keystore and signed certificate if you don’t have one already. To learn how torun the Generate Signed APK Wizard, seeSigning Your App in Android Studio.
- Make sure to record the following information for later:
- Your application ID: This is a stringconsisting only of digits (typically 12 or more), at the beginning of your client ID.
- Your signing certificate: Note which certificate you used when setting upyour API access (the certificate whose SHA1 fingerprint you provided). Youshould use the same certificate to sign your app when testing or releasing yourapp.
- Configure achievements for Type-a-Number Challenge:
- Select the Achievements tab in the Google Play Console.
- Add the following sample achievements:
Name Description Special Instructions Prime Get a score that's a prime number. None Humble Request a score of 0. None Don't get cocky, kid Request a score of 9999 in either mode. None OMG U R TEH UBER LEET! Receive a score of 1337. Make this a hidden achievement. Bored Play the game 10 times. Make this an an incremental achievement with 10 steps to unlock. Really Really Bored Play the game 100 times. Make this an an incremental achievement with 100 steps to unlock. - Record the IDs (long alphanumeric strings) for each achievement that youcreated.
- Configure achievements that are appropriate for your game. To learn more,see the concepts behind achievementsand how to implement achievements in Android.
- Configure the leaderboards for Type-a-Number Challenge:
- Select the Leaderboards tab in the Google Play Console.
- Add two sample leaderboards: one named “Easy High Scores” and anothernamed “Hard High Scores”. Both leaderboards should use Integer score formattingwith 0 decimal places, and an ordering type of Larger is better.
- Record the IDs (long alphanumeric strings) for each leaderboard you created.
- Configure leaderboards that are appropriate for your game. To learn more,see the concepts behind leaderboards andhow to implement leaderboards in Android.
- Add test accounts for your game.This step is needed only for apps that have not yet been published inthe Google Play Console. Before the app is published, only the test accounts listedin the Google Play Console can log in. However, once an application is published,everyone is allowed to log in.
ConnectionResult.SIGN_IN_REQUIRED
return code. If you attempt to launchConnectionResult.startResolutionForResult()
,you'll get backGamesActivityResultCodes.RESULT_SIGN_IN_FAILED
.Step 3: Modify your code
To run the game, you need to configure the application ID as a resource in yourAndroid project. You will also need to add games metadata in the AndroidManifest.xml
.
- Open
res/values/ids.xml
and replace the placeholder IDs. If you arecreating an Android game from scratch, you will need to create this file first.- Specify your application ID in the
app_id
resource. - Specify each achievement ID that you created earlier in the corresponding
achievement_*
resource. - Specify each leaderboard ID that you created earlier in the corresponding
leaderboard_*
resource.
- Specify your application ID in the
- Open
AndroidManifest.xml
and enter your package name in thepackage
attribute of the <manifest
> element. If you are creating an Android game fromscratch, make sure that you also add the following code inside the <application
> element:
Step 4: Test your game
Imo video call apk download for android. To ensure that Google Play games services are functioning correctly in your game, test theapplication before you publish it on Google Play.
Note:Creating A Simple Game For Android Devices Download For Windows 7
It's recommended that you test on a physical Android device. However, ifyou do not have a physical device, you can test against theAndroid Emulator. To do so, download theemulator system image that includes theGoogle Play Services, under Android 4.2.2, from theSDK Manager.To run your game on your physical test device:
- Verify that you have set up the test account that you are using to log into the app (as described in Step 2).
- Export an APK and sign it with the same certificate that you used to set upthe project in Google Play Console. To export a signed APK in Android Studio, clickBuild > Generate Signed APK.
- Install the signed APK on your physical test device by using the
adb
tool.To learn how to install an application, seeRunning on a Device.